author = {Tobias Engelmann1  and Melanie Speck and Holger Rohn and  Katrin Bienge and Nina Langen and Eva Howell  and Christine  Göbel and Silke Friedrich and Petra Teitscheid and Christa  Liedtke},
      editor = {Schiefer, Gerhard},
      title = {{Sustainability assessment of out of-of-home meals:  poten-tials and obstacles applying indicator sets NAHGAST  Meal-Basis and NAHGAST Meal-Pro}},
      journal = {International European Forum, February 13-17, 2017,  Innsbruck-Igls, Austria},
      volume = {2017},
      number = {Number 1},
      pages = {329},
      year = {2017},